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authorUlrich Drepper <drepper@redhat.com>1996-08-12 01:42:37 +0000
committerUlrich Drepper <drepper@redhat.com>1996-08-12 01:42:37 +0000
commita3e59be8d1e0dbb1d2ab25c3dc4b0ad04e159ad2 (patch)
tree4e507bb1c5005fdd7180feff4fa4729ca3790a8a /sysdeps/unix/getlogin.c
parent267ca16a67be70e0361c212e805d43884aee4506 (diff)
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Mon Aug 12 03:31:58 1996 Ulrich Drepper <drepper@cygnus.com> * nss/nsswitch.c (__nss_configure_lookup): New function. Allows to specify services. * nss/XXX-lookup.h: Rename database variable and make global. * nss/databases.def: New file. Real names of all databases. * nss/nss.h: New file. Contains declaration useful for users and service developers. * nss/nsswitch.h: Move some declarations to nss/nss.h. * nss.h: New file. Wrapper around nss/nss.h. * nss/Makefile (headers): Add nss.h. (distributes): Add databases.h. Sun Aug 11 16:19:42 1996 Ulrich Drepper <drepper@cygnus.com> Help the poor people with fast machines by making sure only one `ar' commands works on the library. * autolock.sh: New file. Written by Tom Tromey. * Makerules (do-ar): Call autolock.sh shell script instead of directly using `ar'. * config.make.in: Make configuration variable AUTOLOCK which gets initialized by configure. * configure.in: Define variable AUTOLOCK to point to autolock.sh script and mark it to substitute. * string/Makefile: Add -fno-builtin for tst-strlen.c, too. * elf/dl-lookup.c (_dl_lookup_symbol): Allow self-referencing. Patch by David Mosberger-Tang. Sun Aug 11 01:12:38 1996 Richard Henderson <rth@tamu.edu> * sysdeps/alpha/dl-machine.h (elf_alpha_fix_plt): Optimize LD_BIND_NOW startup by moving Icache flush from here ... (ELF_MACHINE_RUNTIME_TRAMPOLINE): ... to here. (ELF_MACHINE_USER_ADDRESS_MASK): Delete; it is unused. * sysdeps/alpha/divrem.h: Update comment to reflect the actual calling conventions. The code is already correct. Sun Aug 11 01:06:42 1996 Richard Henderson <rth@tamu.edu> * string/Makefile: Compile tester with -fno-builtin as we want to test our implementations, not gcc's.
Diffstat (limited to 'sysdeps/unix/getlogin.c')
-rw-r--r--sysdeps/unix/getlogin.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/sysdeps/unix/getlogin.c b/sysdeps/unix/getlogin.c
index 5a8ad96..e23ffa4 100644
--- a/sysdeps/unix/getlogin.c
+++ b/sysdeps/unix/getlogin.c
@@ -34,25 +34,21 @@ getlogin (void)
char tty_pathname[2 + 2 * NAME_MAX];
char *real_tty_path = tty_pathname;
char *result = NULL;
- static struct utmp_data utmp_data = { ut_fd: -1 };
+ struct utmp_data utmp_data = { ut_fd: -1 };
+ static char name[UT_NAMESIZE + 1];
struct utmp *ut, line;
- {
- int err = 0;
- int d = __open ("/dev/tty", 0);
- if (d < 0)
- return NULL;
-
- if (__ttyname_r (d, real_tty_path, sizeof (tty_pathname)) < 0)
- err = errno;
- (void) close (d);
-
- if (err != 0)
- {
- errno = err;
- return NULL;
- }
- }
+ /* Get name of tty connected to fd 0. Return NULL if not a tty or
+ if fd 0 isn't open. Note that a lot of documentation says that
+ getlogin() is based on the controlling terminal---what they
+ really mean is "the terminal connected to standard input". The
+ getlogin() implementation of DEC Unix, SunOS, Solaris, HP-UX all
+ return NULL if fd 0 has been closed, so this is the compatible
+ thing to do. Note that ttyname(open("/dev/tty")) on those
+ systems returns /dev/tty, so that is not a possible solution for
+ getlogin(). */
+ if (__ttyname_r (0, real_tty_path, sizeof (tty_pathname)) < 0)
+ return NULL;
real_tty_path += 5; /* Remove "/dev/". */
@@ -66,7 +62,11 @@ getlogin (void)
result = NULL;
}
else
- result = ut->ut_line;
+ {
+ strncpy (name, ut->ut_user, UT_NAMESIZE);
+ name[UT_NAMESIZE] = '\0';
+ result = name;
+ }
__endutent_r (&utmp_data);